Differences

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--- ac_coupling:fronius [2025-07-03 11:57] – old revision restored (2024-10-09 07:42) iburger
+++ ac_coupling:fronius [2025-08-01 08:57] (current) – [1.5 Known frequency exceptions] iburger
@@ Line 63: / Line 63: @@
       - [[ess:design-installation-manual|ESS Assistant]]
       - PV Inverter support
-  - Note that it is not necessary to change the default settings in the Assistant. \\ {{:ac_coupling:ess_frequency_settings.png?nolink&}} \\
+  - It is not necessary to change the default settings in the Assistant, but please see exceptions below. \\ {{:ac_coupling:ess_frequency_settings.png?nolink&}} \\
   - Complete the rest of the Assistant and write the new settings to the MultiPlus or Quattro.
 \\
@@ Line 77: / Line 77: @@
 More information on adding Assistants is [[assistants:how_to_add_and_configure_an_assistant|here]].
+===== 1.5 Known frequency exceptions =====
+  * Fronius bundles between fro35020 and fro36120 (at time of writing) contains a change that holds the inverter relay closed up to 53Hz for grid code MG50, or 63Hz for MG60. This sometimes causes problems when reconnecting to the grid. Please set the Disconnect frequency to 53.1Hz/63.1Hz for these versions. Consult the Fronius [[https://www.fronius.com/en/~/downloads/Solar%20Energy/Firmware/SE_FW_Changelog_New_Fronius_Galvo_Symo_Primo_Eco_DE-EN.pdf|changelog]] when in doubt.
 ====== 2. GX Devices & Fronius PV Inverters ======